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| DOI | 10.1111/ele.13487 |
| Predation risk shapes the degree of placentation in natural populations of live-bearing fish | |
| Hagmayer A.; Furness A.I.; Reznick D.N.; Dekker M.L.; Pollux B.J.A. | |
| 发表日期 | 2020 |
| ISSN | 1461023X |
| 起始页码 | 831 |
| 结束页码 | 840 |
| 卷号 | 23期号:5 |
| 英文摘要 | The placenta is a complex life-history trait that is ubiquitous across the tree of life. Theory proposes that the placenta evolves in response to high performance-demanding conditions by shifting maternal investment from pre- to post-fertilisation, thereby reducing a female’s reproductive burden during pregnancy. We test this hypothesis by studying populations of the fish species Poeciliopsis retropinna in Costa Rica. We found substantial variation in the degree of placentation among natural populations associated with predation risk: females from high predation populations had significantly higher degrees of placentation compared to low predation females, while number, size and quality of offspring at birth remained unaffected. Moreover, a higher degree of placentation correlated with a lower reproductive burden and hence likely an improved swimming performance during pregnancy. Our study advances an adaptive explanation for why the placenta evolves by arguing that an increased degree of placentation offers a selective advantage in high predation environments. © 2020 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd |
| 关键词 | Life-historylive-bearingmatrotrophyplacentaplacentotrophyPoeciliidaepredationsuperfetationTrexler–DeAngelisviviparity |
| 英文关键词 | Poeciliidae; Poeciliopsis retropinna; animal; Costa Rica; Cyprinodontiformes; evolution; female; placenta development; pregnancy; reproduction; Animals; Biological Evolution; Costa Rica; Cyprinodontiformes; Female; Placentation; Pregnancy; Reproduction |
| 语种 | 英语 |
| 来源期刊 | Ecology Letters
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/204233 |
| 作者单位 | Department of Animal Sciences, Wageningen University, Wageningen, 6708 WD, Netherlands; Department of Ecology and Evolutionary Biology, University of California, Irvine, CA 92697, United States; Department of Biological and Marine Sciences, University of Hull, Hull, HU6 7RX, United Kingdom; Department of Biology, University of California, Riverside, CA 92521, United States |
| 推荐引用方式 GB/T 7714 | Hagmayer A.,Furness A.I.,Reznick D.N.,et al. Predation risk shapes the degree of placentation in natural populations of live-bearing fish[J],2020,23(5). |
| APA | Hagmayer A.,Furness A.I.,Reznick D.N.,Dekker M.L.,&Pollux B.J.A..(2020).Predation risk shapes the degree of placentation in natural populations of live-bearing fish.Ecology Letters,23(5). |
| MLA | Hagmayer A.,et al."Predation risk shapes the degree of placentation in natural populations of live-bearing fish".Ecology Letters 23.5(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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